CX_Define(
    [],
    function ()
    {
        /** vim: et:ts=4:sw=4:sts=4
         * @license RequireJS 2.1.11 Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved.
         * Available via the MIT or new BSD license.
         * see: http://github.com/jrburke/requirejs for details
         */
        //Not using strict: uneven strict support in browsers, #392, and causes
        //problems with requirejs.exec()/transpiler plugins that may not be strict.
        /*jslint regexp: true, nomen: true, sloppy: true */
        /*global window, navigator, document, importScripts, setTimeout, opera */
        // var requirejs
        (function (global) {
            var req, s, head, baseElement, dataMain, src,
                interactiveScript, currentlyAddingScript, mainScript, subPath,
                version = '2.1.11',
                commentRegExp = /(\/\*([\s\S]*?)\*\/|([^:]|^)\/\/(.*)$)/mg,
                cjsRequireRegExp = /[^.]\s*require\s*\(\s*["']([^'"\s]+)["']\s*\)/g,
                jsSuffixRegExp = /\.js$/,
                currDirRegExp = /^\.\//,
                op = Object.prototype,
                ostring = op.toString,
                hasOwn = op.hasOwnProperty,
                ap = Array.prototype,
                apsp = ap.splice,
                isBrowser = !!(typeof window !== 'undefined' && typeof navigator !== 'undefined' && window.document),
                isWebWorker = !isBrowser && typeof importScripts !== 'undefined',
                //PS3 indicates loaded and complete, but need to wait for complete
                //specifically. Sequence is 'loading', 'loaded', execution,
                // then 'complete'. The UA check is unfortunate, but not sure how
                //to feature test w/o causing perf issues.
                readyRegExp = isBrowser && navigator.platform === 'PLAYSTATION 3' ?
                              /^complete$/ : /^(complete|loaded)$/,
                defContextName = '_',
                //Oh the tragedy, detecting opera. See the usage of isOpera for reason.
                isOpera = typeof opera !== 'undefined' && opera.toString() === '[object Opera]',
                contexts = {},
                cfg = {},
                globalDefQueue = [],
                useInteractive = false;

            function isFunction(it) {
                return ostring.call(it) === '[object Function]';
            }

            function isArray(it) {
                return ostring.call(it) === '[object Array]';
            }

            /**
             * Helper function for iterating over an array. If the func returns
             * a true value, it will break out of the loop.
             */
            function each(ary, func) {
                if (ary) {
                    var i;
                    for (i = 0; i < ary.length; i += 1) {
                        if (ary[i] && func(ary[i], i, ary)) {
                            break;
                        }
                    }
                }
            }

            /**
             * Helper function for iterating over an array backwards. If the func
             * returns a true value, it will break out of the loop.
             */
            function eachReverse(ary, func) {
                if (ary) {
                    var i;
                    for (i = ary.length - 1; i > -1; i -= 1) {
                        if (ary[i] && func(ary[i], i, ary)) {
                            break;
                        }
                    }
                }
            }

            function hasProp(obj, prop) {
                return hasOwn.call(obj, prop);
            }

            function getOwn(obj, prop) {
                return hasProp(obj, prop) && obj[prop];
            }

            /**
             * Cycles over properties in an object and calls a function for each
             * property value. If the function returns a truthy value, then the
             * iteration is stopped.
             */
            function eachProp(obj, func) {
                var prop;
                for (prop in obj) {
                    if (hasProp(obj, prop)) {
                        if (func(obj[prop], prop)) {
                            break;
                        }
                    }
                }
            }

            /**
             * Simple function to mix in properties from source into target,
             * but only if target does not already have a property of the same name.
             */
            function mixin(target, source, force, deepStringMixin) {
                if (source) {
                    eachProp(source, function (value, prop) {
                        if (force || !hasProp(target, prop)) {
                            if (deepStringMixin && typeof value === 'object' && value &&
                                !isArray(value) && !isFunction(value) &&
                                !(value instanceof RegExp)) {

                                if (!target[prop]) {
                                    target[prop] = {};
                                }
                                mixin(target[prop], value, force, deepStringMixin);
                            } else {
                                target[prop] = value;
                            }
                        }
                    });
                }
                return target;
            }

            //Similar to Function.prototype.bind, but the 'this' object is specified
            //first, since it is easier to read/figure out what 'this' will be.
            function bind(obj, fn) {
                return function () {
                    return fn.apply(obj, arguments);
                };
            }

            function scripts() {
                return document.getElementsByTagName('script');
            }

            function defaultOnError(err) {
                throw err;
            }

            //Allow getting a global that is expressed in
            //dot notation, like 'a.b.c'.
            function getGlobal(value) {
                if (!value) {
                    return value;
                }
                var g = global;
                each(value.split('.'), function (part) {
                    g = g[part];
                });
                return g;
            }

            /**
             * Constructs an error with a pointer to an URL with more information.
             * @param {String} id the error ID that maps to an ID on a web page.
             * @param {String} message human readable error.
             * @param {Error} [err] the original error, if there is one.
             *
             * @returns {Error}
             */
            function makeError(id, msg, err, requireModules) {
                var e = new Error(msg + '\nhttp://requirejs.org/docs/errors.html#' + id);
                e.requireType = id;
                e.requireModules = requireModules;
                if (err) {
                    e.originalError = err;
                }
                return e;
            }

            if (typeof define !== 'undefined') {
                //If a define is already in play via another AMD loader,
                //do not overwrite.
                return;
            }

            if (typeof requirejs !== 'undefined') {
                if (isFunction(requirejs)) {
                    //Do not overwrite and existing requirejs instance.
                    return;
                }
                cfg = requirejs;
                requirejs = undefined;
            }

            //Allow for a require config object
            if (typeof require !== 'undefined' && !isFunction(require)) {
                //assume it is a config object.
                cfg = require;
                require = undefined;
            }

            function newContext(contextName) {
                var inCheckLoaded, Module, context, handlers,
                    checkLoadedTimeoutId,
                    config = {
                        //Defaults. Do not set a default for map
                        //config to speed up normalize(), which
                        //will run faster if there is no default.
                        waitSeconds: 7,
                        baseUrl: './',
                        paths: {},
                        bundles: {},
                        pkgs: {},
                        shim: {},
                        config: {}
                    },
                    registry = {},
                    //registry of just enabled modules, to speed
                    //cycle breaking code when lots of modules
                    //are registered, but not activated.
                    enabledRegistry = {},
                    undefEvents = {},
                    defQueue = [],
                    defined = {},
                    urlFetched = {},
                    bundlesMap = {},
                    requireCounter = 1,
                    unnormalizedCounter = 1;

                /**
                 * Trims the . and .. from an array of path segments.
                 * It will keep a leading path segment if a .. will become
                 * the first path segment, to help with module name lookups,
                 * which act like paths, but can be remapped. But the end result,
                 * all paths that use this function should look normalized.
                 * NOTE: this method MODIFIES the input array.
                 * @param {Array} ary the array of path segments.
                 */
                function trimDots(ary) {
                    var i, part, length = ary.length;
                    for (i = 0; i < length; i++) {
                        part = ary[i];
                        if (part === '.') {
                            ary.splice(i, 1);
                            i -= 1;
                        } else if (part === '..') {
                            if (i === 1 && (ary[2] === '..' || ary[0] === '..')) {
                                //End of the line. Keep at least one non-dot
                                //path segment at the front so it can be mapped
                                //correctly to disk. Otherwise, there is likely
                                //no path mapping for a path starting with '..'.
                                //This can still fail, but catches the most reasonable
                                //uses of ..
                                break;
                            } else if (i > 0) {
                                ary.splice(i - 1, 2);
                                i -= 2;
                            }
                        }
                    }
                }

                /**
                 * Given a relative module name, like ./something, normalize it to
                 * a real name that can be mapped to a path.
                 * @param {String} name the relative name
                 * @param {String} baseName a real name that the name arg is relative
                 * to.
                 * @param {Boolean} applyMap apply the map config to the value. Should
                 * only be done if this normalization is for a dependency ID.
                 * @returns {String} normalized name
                 */
                function normalize(name, baseName, applyMap) {
                    var pkgMain, mapValue, nameParts, i, j, nameSegment, lastIndex,
                        foundMap, foundI, foundStarMap, starI,
                        baseParts = baseName && baseName.split('/'),
                        normalizedBaseParts = baseParts,
                        map = config.map,
                        starMap = map && map['*'];

                    //Adjust any relative paths.
                    if (name && name.charAt(0) === '.') {
                        //If have a base name, try to normalize against it,
                        //otherwise, assume it is a top-level require that will
                        //be relative to baseUrl in the end.
                        if (baseName) {
                            //Convert baseName to array, and lop off the last part,
                            //so that . matches that 'directory' and not name of the baseName's
                            //module. For instance, baseName of 'one/two/three', maps to
                            //'one/two/three.js', but we want the directory, 'one/two' for
                            //this normalization.
                            normalizedBaseParts = baseParts.slice(0, baseParts.length - 1);
                            name = name.split('/');
                            lastIndex = name.length - 1;

                            // If wanting node ID compatibility, strip .js from end
                            // of IDs. Have to do this here, and not in nameToUrl
                            // because node allows either .js or non .js to map
                            // to same file.
                            if (config.nodeIdCompat && jsSuffixRegExp.test(name[lastIndex])) {
                                name[lastIndex] = name[lastIndex].replace(jsSuffixRegExp, '');
                            }

                            name = normalizedBaseParts.concat(name);
                            trimDots(name);
                            name = name.join('/');
                        } else if (name.indexOf('./') === 0) {
                            // No baseName, so this is ID is resolved relative
                            // to baseUrl, pull off the leading dot.
                            name = name.substring(2);
                        }
                    }

                    //Apply map config if available.
                    if (applyMap && map && (baseParts || starMap)) {
                        nameParts = name.split('/');

                        outerLoop: for (i = nameParts.length; i > 0; i -= 1) {
                            nameSegment = nameParts.slice(0, i).join('/');

                            if (baseParts) {
                                //Find the longest baseName segment match in the config.
                                //So, do joins on the biggest to smallest lengths of baseParts.
                                for (j = baseParts.length; j > 0; j -= 1) {
                                    mapValue = getOwn(map, baseParts.slice(0, j).join('/'));

                                    //baseName segment has config, find if it has one for
                                    //this name.
                                    if (mapValue) {
                                        mapValue = getOwn(mapValue, nameSegment);
                                        if (mapValue) {
                                            //Match, update name to the new value.
                                            foundMap = mapValue;
                                            foundI = i;
                                            break outerLoop;
                                        }
                                    }
                                }
                            }

                            //Check for a star map match, but just hold on to it,
                            //if there is a shorter segment match later in a matching
                            //config, then favor over this star map.
                            if (!foundStarMap && starMap && getOwn(starMap, nameSegment)) {
                                foundStarMap = getOwn(starMap, nameSegment);
                                starI = i;
                            }
                        }

                        if (!foundMap && foundStarMap) {
                            foundMap = foundStarMap;
                            foundI = starI;
                        }

                        if (foundMap) {
                            nameParts.splice(0, foundI, foundMap);
                            name = nameParts.join('/');
                        }
                    }

                    // If the name points to a package's name, use
                    // the package main instead.
                    pkgMain = getOwn(config.pkgs, name);

                    return pkgMain ? pkgMain : name;
                }

                function removeScript(name) {
                    if (isBrowser) {
                        each(scripts(), function (scriptNode) {
                            if (scriptNode.getAttribute('data-requiremodule') === name &&
                                    scriptNode.getAttribute('data-requirecontext') === context.contextName) {
                                scriptNode.parentNode.removeChild(scriptNode);
                                return true;
                            }
                        });
                    }
                }

                function hasPathFallback(id) {
                    var pathConfig = getOwn(config.paths, id);
                    if (pathConfig && isArray(pathConfig) && pathConfig.length > 1) {
                        //Pop off the first array value, since it failed, and
                        //retry
                        pathConfig.shift();
                        context.require.undef(id);
                        context.require([id]);
                        return true;
                    }
                }

                //Turns a plugin!resource to [plugin, resource]
                //with the plugin being undefined if the name
                //did not have a plugin prefix.
                function splitPrefix(name) {
                    var prefix,
                        index = name ? name.indexOf('!') : -1;
                    if (index > -1) {
                        prefix = name.substring(0, index);
                        name = name.substring(index + 1, name.length);
                    }
                    return [prefix, name];
                }

                /**
                 * Creates a module mapping that includes plugin prefix, module
                 * name, and path. If parentModuleMap is provided it will
                 * also normalize the name via require.normalize()
                 *
                 * @param {String} name the module name
                 * @param {String} [parentModuleMap] parent module map
                 * for the module name, used to resolve relative names.
                 * @param {Boolean} isNormalized: is the ID already normalized.
                 * This is true if this call is done for a define() module ID.
                 * @param {Boolean} applyMap: apply the map config to the ID.
                 * Should only be true if this map is for a dependency.
                 *
                 * @returns {Object}
                 */
                function makeModuleMap(name, parentModuleMap, isNormalized, applyMap) {
                    var url, pluginModule, suffix, nameParts,
                        prefix = null,
                        parentName = parentModuleMap ? parentModuleMap.name : null,
                        originalName = name,
                        isDefine = true,
                        normalizedName = '';

                    //If no name, then it means it is a require call, generate an
                    //internal name.
                    if (!name) {
                        isDefine = false;
                        name = '_@r' + (requireCounter += 1);
                    }

                    nameParts = splitPrefix(name);
                    prefix = nameParts[0];
                    name = nameParts[1];

                    if (prefix) {
                        prefix = normalize(prefix, parentName, applyMap);
                        pluginModule = getOwn(defined, prefix);
                    }

                    //Account for relative paths if there is a base name.
                    if (name) {
                        if (prefix) {
                            if (pluginModule && pluginModule.normalize) {
                                //Plugin is loaded, use its normalize method.
                                normalizedName = pluginModule.normalize(name, function (name) {
                                    return normalize(name, parentName, applyMap);
                                });
                            } else {
                                normalizedName = normalize(name, parentName, applyMap);
                            }
                        } else {
                            //A regular module.
                            normalizedName = normalize(name, parentName, applyMap);

                            //Normalized name may be a plugin ID due to map config
                            //application in normalize. The map config values must
                            //already be normalized, so do not need to redo that part.
                            nameParts = splitPrefix(normalizedName);
                            prefix = nameParts[0];
                            normalizedName = nameParts[1];
                            isNormalized = true;

                            url = context.nameToUrl(normalizedName);
                        }
                    }

                    //If the id is a plugin id that cannot be determined if it needs
                    //normalization, stamp it with a unique ID so two matching relative
                    //ids that may conflict can be separate.
                    suffix = prefix && !pluginModule && !isNormalized ?
                             '_unnormalized' + (unnormalizedCounter += 1) :
                             '';

                    return {
                        prefix: prefix,
                        name: normalizedName,
                        parentMap: parentModuleMap,
                        unnormalized: !!suffix,
                        url: url,
                        originalName: originalName,
                        isDefine: isDefine,
                        id: (prefix ?
                                prefix + '!' + normalizedName :
                                normalizedName) + suffix
                    };
                }

                function getModule(depMap) {
                    var id = depMap.id,
                        mod = getOwn(registry, id);

                    if (!mod) {
                        mod = registry[id] = new context.Module(depMap);
                    }

                    return mod;
                }

                function on(depMap, name, fn) {
                    var id = depMap.id,
                        mod = getOwn(registry, id);

                    if (hasProp(defined, id) &&
                            (!mod || mod.defineEmitComplete)) {
                        if (name === 'defined') {
                            fn(defined[id]);
                        }
                    } else {
                        mod = getModule(depMap);
                        if (mod.error && name === 'error') {
                            fn(mod.error);
                        } else {
                            mod.on(name, fn);
                        }
                    }
                }

                function onError(err, errback) {
                    var ids = err.requireModules,
                        notified = false;

                    if (errback) {
                        errback(err);
                    } else {
                        each(ids, function (id) {
                            var mod = getOwn(registry, id);
                            if (mod) {
                                //Set error on module, so it skips timeout checks.
                                mod.error = err;
                                if (mod.events.error) {
                                    notified = true;
                                    mod.emit('error', err);
                                }
                            }
                        });

                        if (!notified) {
                            req.onError(err);
                        }
                    }
                }

                /**
                 * Internal method to transfer globalQueue items to this context's
                 * defQueue.
                 */
                function takeGlobalQueue() {
                    //Push all the globalDefQueue items into the context's defQueue
                    if (globalDefQueue.length) {
                        //Array splice in the values since the context code has a
                        //local var ref to defQueue, so cannot just reassign the one
                        //on context.
                        apsp.apply(defQueue,
                                   [defQueue.length, 0].concat(globalDefQueue));
                        globalDefQueue = [];
                    }
                }

                handlers = {
                    'require': function (mod) {
                        if (mod.require) {
                            return mod.require;
                        } else {
                            return (mod.require = context.makeRequire(mod.map));
                        }
                    },
                    'exports': function (mod) {
                        mod.usingExports = true;
                        if (mod.map.isDefine) {
                            if (mod.exports) {
                                return (defined[mod.map.id] = mod.exports);
                            } else {
                                return (mod.exports = defined[mod.map.id] = {});
                            }
                        }
                    },
                    'module': function (mod) {
                        if (mod.module) {
                            return mod.module;
                        } else {
                            return (mod.module = {
                                id: mod.map.id,
                                uri: mod.map.url,
                                config: function () {
                                    return  getOwn(config.config, mod.map.id) || {};
                                },
                                exports: mod.exports || (mod.exports = {})
                            });
                        }
                    }
                };

                function cleanRegistry(id) {
                    //Clean up machinery used for waiting modules.
                    delete registry[id];
                    delete enabledRegistry[id];
                }

                function breakCycle(mod, traced, processed) {
                    var id = mod.map.id;

                    if (mod.error) {
                        mod.emit('error', mod.error);
                    } else {
                        traced[id] = true;
                        each(mod.depMaps, function (depMap, i) {
                            var depId = depMap.id,
                                dep = getOwn(registry, depId);

                            //Only force things that have not completed
                            //being defined, so still in the registry,
                            //and only if it has not been matched up
                            //in the module already.
                            if (dep && !mod.depMatched[i] && !processed[depId]) {
                                if (getOwn(traced, depId)) {
                                    mod.defineDep(i, defined[depId]);
                                    mod.check(); //pass false?
                                } else {
                                    breakCycle(dep, traced, processed);
                                }
                            }
                        });
                        processed[id] = true;
                    }
                }

                function checkLoaded() {
                    var err, usingPathFallback,
                        waitInterval = config.waitSeconds * 1000,
                        //It is possible to disable the wait interval by using waitSeconds of 0.
                        expired = waitInterval && (context.startTime + waitInterval) < new Date().getTime(),
                        noLoads = [],
                        reqCalls = [],
                        stillLoading = false,
                        needCycleCheck = true;

                    //Do not bother if this call was a result of a cycle break.
                    if (inCheckLoaded) {
                        return;
                    }

                    inCheckLoaded = true;

                    //Figure out the state of all the modules.
                    eachProp(enabledRegistry, function (mod) {
                        var map = mod.map,
                            modId = map.id;

                        //Skip things that are not enabled or in error state.
                        if (!mod.enabled) {
                            return;
                        }

                        if (!map.isDefine) {
                            reqCalls.push(mod);
                        }

                        if (!mod.error) {
                            //If the module should be executed, and it has not
                            //been inited and time is up, remember it.
                            if (!mod.inited && expired) {
                                if (hasPathFallback(modId)) {
                                    usingPathFallback = true;
                                    stillLoading = true;
                                } else {
                                    noLoads.push(modId);
                                    removeScript(modId);
                                }
                            } else if (!mod.inited && mod.fetched && map.isDefine) {
                                stillLoading = true;
                                if (!map.prefix) {
                                    //No reason to keep looking for unfinished
                                    //loading. If the only stillLoading is a
                                    //plugin resource though, keep going,
                                    //because it may be that a plugin resource
                                    //is waiting on a non-plugin cycle.
                                    return (needCycleCheck = false);
                                }
                            }
                        }
                    });

                    if (expired && noLoads.length) {
                        //If wait time expired, throw error of unloaded modules.
                        err = makeError('timeout', 'Load timeout for modules: ' + noLoads, null, noLoads);
                        err.contextName = context.contextName;
                        return onError(err);
                    }

                    //Not expired, check for a cycle.
                    if (needCycleCheck) {
                        each(reqCalls, function (mod) {
                            breakCycle(mod, {}, {});
                        });
                    }

                    //If still waiting on loads, and the waiting load is something
                    //other than a plugin resource, or there are still outstanding
                    //scripts, then just try back later.
                    if ((!expired || usingPathFallback) && stillLoading) {
                        //Something is still waiting to load. Wait for it, but only
                        //if a timeout is not already in effect.
                        if ((isBrowser || isWebWorker) && !checkLoadedTimeoutId) {
                            checkLoadedTimeoutId = setTimeout(function () {
                                checkLoadedTimeoutId = 0;
                                checkLoaded();
                            }, 50);
                        }
                    }

                    inCheckLoaded = false;
                }

                Module = function (map) {
                    this.events = getOwn(undefEvents, map.id) || {};
                    this.map = map;
                    this.shim = getOwn(config.shim, map.id);
                    this.depExports = [];
                    this.depMaps = [];
                    this.depMatched = [];
                    this.pluginMaps = {};
                    this.depCount = 0;

                    /* this.exports this.factory
                       this.depMaps = [],
                       this.enabled, this.fetched
                    */
                };

                Module.prototype = {
                    init: function (depMaps, factory, errback, options) {
                        options = options || {};

                        //Do not do more inits if already done. Can happen if there
                        //are multiple define calls for the same module. That is not
                        //a normal, common case, but it is also not unexpected.
                        if (this.inited) {
                            return;
                        }

                        this.factory = factory;

                        if (errback) {
                            //Register for errors on this module.
                            this.on('error', errback);
                        } else if (this.events.error) {
                            //If no errback already, but there are error listeners
                            //on this module, set up an errback to pass to the deps.
                            errback = bind(this, function (err) {
                                this.emit('error', err);
                            });
                        }

                        //Do a copy of the dependency array, so that
                        //source inputs are not modified. For example
                        //"shim" deps are passed in here directly, and
                        //doing a direct modification of the depMaps array
                        //would affect that config.
                        this.depMaps = depMaps && depMaps.slice(0);

                        this.errback = errback;

                        //Indicate this module has be initialized
                        this.inited = true;

                        this.ignore = options.ignore;

                        //Could have option to init this module in enabled mode,
                        //or could have been previously marked as enabled. However,
                        //the dependencies are not known until init is called. So
                        //if enabled previously, now trigger dependencies as enabled.
                        if (options.enabled || this.enabled) {
                            //Enable this module and dependencies.
                            //Will call this.check()
                            this.enable();
                        } else {
                            this.check();
                        }
                    },

                    defineDep: function (i, depExports) {
                        //Because of cycles, defined callback for a given
                        //export can be called more than once.
                        if (!this.depMatched[i]) {
                            this.depMatched[i] = true;
                            this.depCount -= 1;
                            this.depExports[i] = depExports;
                        }
                    },

                    fetch: function () {
                        if (this.fetched) {
                            return;
                        }
                        this.fetched = true;

                        context.startTime = (new Date()).getTime();

                        var map = this.map;

                        //If the manager is for a plugin managed resource,
                        //ask the plugin to load it now.
                        if (this.shim) {
                            context.makeRequire(this.map, {
                                enableBuildCallback: true
                            })(this.shim.deps || [], bind(this, function () {
                                return map.prefix ? this.callPlugin() : this.load();
                            }));
                        } else {
                            //Regular dependency.
                            return map.prefix ? this.callPlugin() : this.load();
                        }
                    },

                    load: function () {
                        var url = this.map.url;

                        //Regular dependency.
                        if (!urlFetched[url]) {
                            urlFetched[url] = true;
                            context.load(this.map.id, url);
                        }
                    },

                    /**
                     * Checks if the module is ready to define itself, and if so,
                     * define it.
                     */
                    check: function () {
                        if (!this.enabled || this.enabling) {
                            return;
                        }

                        var err, cjsModule,
                            id = this.map.id,
                            depExports = this.depExports,
                            exports = this.exports,
                            factory = this.factory;

                        if (!this.inited) {
                            this.fetch();
                        } else if (this.error) {
                            this.emit('error', this.error);
                        } else if (!this.defining) {
                            //The factory could trigger another require call
                            //that would result in checking this module to
                            //define itself again. If already in the process
                            //of doing that, skip this work.
                            this.defining = true;

                            if (this.depCount < 1 && !this.defined) {
                                if (isFunction(factory)) {
                                    //If there is an error listener, favor passing
                                    //to that instead of throwing an error. However,
                                    //only do it for define()'d  modules. require
                                    //errbacks should not be called for failures in
                                    //their callbacks (#699). However if a global
                                    //onError is set, use that.
                                    if ((this.events.error && this.map.isDefine) ||
                                        req.onError !== defaultOnError) {
                                        try {
                                            exports = context.execCb(id, factory, depExports, exports);
                                        } catch (e) {
                                            err = e;
                                        }
                                    } else {
                                        exports = context.execCb(id, factory, depExports, exports);
                                    }

                                    // Favor return value over exports. If node/cjs in play,
                                    // then will not have a return value anyway. Favor
                                    // module.exports assignment over exports object.
                                    if (this.map.isDefine && exports === undefined) {
                                        cjsModule = this.module;
                                        if (cjsModule) {
                                            exports = cjsModule.exports;
                                        } else if (this.usingExports) {
                                            //exports already set the defined value.
                                            exports = this.exports;
                                        }
                                    }

                                    if (err) {
                                        err.requireMap = this.map;
                                        err.requireModules = this.map.isDefine ? [this.map.id] : null;
                                        err.requireType = this.map.isDefine ? 'define' : 'require';
                                        return onError((this.error = err));
                                    }

                                } else {
                                    //Just a literal value
                                    exports = factory;
                                }

                                this.exports = exports;

                                if (this.map.isDefine && !this.ignore) {
                                    defined[id] = exports;

                                    if (req.onResourceLoad) {
                                        req.onResourceLoad(context, this.map, this.depMaps);
                                    }
                                }

                                //Clean up
                                cleanRegistry(id);

                                this.defined = true;
                            }

                            //Finished the define stage. Allow calling check again
                            //to allow define notifications below in the case of a
                            //cycle.
                            this.defining = false;

                            if (this.defined && !this.defineEmitted) {
                                this.defineEmitted = true;
                                this.emit('defined', this.exports);
                                this.defineEmitComplete = true;
                            }

                        }
                    },

                    callPlugin: function () {
                        var map = this.map,
                            id = map.id,
                            //Map already normalized the prefix.
                            pluginMap = makeModuleMap(map.prefix);

                        //Mark this as a dependency for this plugin, so it
                        //can be traced for cycles.
                        this.depMaps.push(pluginMap);

                        on(pluginMap, 'defined', bind(this, function (plugin) {
                            var load, normalizedMap, normalizedMod,
                                bundleId = getOwn(bundlesMap, this.map.id),
                                name = this.map.name,
                                parentName = this.map.parentMap ? this.map.parentMap.name : null,
                                localRequire = context.makeRequire(map.parentMap, {
                                    enableBuildCallback: true
                                });

                            //If current map is not normalized, wait for that
                            //normalized name to load instead of continuing.
                            if (this.map.unnormalized) {
                                //Normalize the ID if the plugin allows it.
                                if (plugin.normalize) {
                                    name = plugin.normalize(name, function (name) {
                                        return normalize(name, parentName, true);
                                    }) || '';
                                }

                                //prefix and name should already be normalized, no need
                                //for applying map config again either.
                                normalizedMap = makeModuleMap(map.prefix + '!' + name,
                                                              this.map.parentMap);
                                on(normalizedMap,
                                    'defined', bind(this, function (value) {
                                        this.init([], function () { return value; }, null, {
                                            enabled: true,
                                            ignore: true
                                        });
                                    }));

                                normalizedMod = getOwn(registry, normalizedMap.id);
                                if (normalizedMod) {
                                    //Mark this as a dependency for this plugin, so it
                                    //can be traced for cycles.
                                    this.depMaps.push(normalizedMap);

                                    if (this.events.error) {
                                        normalizedMod.on('error', bind(this, function (err) {
                                            this.emit('error', err);
                                        }));
                                    }
                                    normalizedMod.enable();
                                }

                                return;
                            }

                            //If a paths config, then just load that file instead to
                            //resolve the plugin, as it is built into that paths layer.
                            if (bundleId) {
                                this.map.url = context.nameToUrl(bundleId);
                                this.load();
                                return;
                            }

                            load = bind(this, function (value) {
                                this.init([], function () { return value; }, null, {
                                    enabled: true
                                });
                            });

                            load.error = bind(this, function (err) {
                                this.inited = true;
                                this.error = err;
                                err.requireModules = [id];

                                //Remove temp unnormalized modules for this module,
                                //since they will never be resolved otherwise now.
                                eachProp(registry, function (mod) {
                                    if (mod.map.id.indexOf(id + '_unnormalized') === 0) {
                                        cleanRegistry(mod.map.id);
                                    }
                                });

                                onError(err);
                            });

                            //Allow plugins to load other code without having to know the
                            //context or how to 'complete' the load.
                            load.fromText = bind(this, function (text, textAlt) {
                                /*jslint evil: true */
                                var moduleName = map.name,
                                    moduleMap = makeModuleMap(moduleName),
                                    hasInteractive = useInteractive;

                                //As of 2.1.0, support just passing the text, to reinforce
                                //fromText only being called once per resource. Still
                                //support old style of passing moduleName but discard
                                //that moduleName in favor of the internal ref.
                                if (textAlt) {
                                    text = textAlt;
                                }

                                //Turn off interactive script matching for IE for any define
                                //calls in the text, then turn it back on at the end.
                                if (hasInteractive) {
                                    useInteractive = false;
                                }

                                //Prime the system by creating a module instance for
                                //it.
                                getModule(moduleMap);

                                //Transfer any config to this other module.
                                if (hasProp(config.config, id)) {
                                    config.config[moduleName] = config.config[id];
                                }

                                try {
                                    req.exec(text);
                                } catch (e) {
                                    return onError(makeError('fromtexteval',
                                                     'fromText eval for ' + id +
                                                    ' failed: ' + e,
                                                     e,
                                                     [id]));
                                }

                                if (hasInteractive) {
                                    useInteractive = true;
                                }

                                //Mark this as a dependency for the plugin
                                //resource
                                this.depMaps.push(moduleMap);

                                //Support anonymous modules.
                                context.completeLoad(moduleName);

                                //Bind the value of that module to the value for this
                                //resource ID.
                                localRequire([moduleName], load);
                            });

                            //Use parentName here since the plugin's name is not reliable,
                            //could be some weird string with no path that actually wants to
                            //reference the parentName's path.
                            plugin.load(map.name, localRequire, load, config);
                        }));

                        context.enable(pluginMap, this);
                        this.pluginMaps[pluginMap.id] = pluginMap;
                    },

                    enable: function () {
                        enabledRegistry[this.map.id] = this;
                        this.enabled = true;

                        //Set flag mentioning that the module is enabling,
                        //so that immediate calls to the defined callbacks
                        //for dependencies do not trigger inadvertent load
                        //with the depCount still being zero.
                        this.enabling = true;

                        //Enable each dependency
                        each(this.depMaps, bind(this, function (depMap, i) {
                            var id, mod, handler;

                            if (typeof depMap === 'string') {
                                //Dependency needs to be converted to a depMap
                                //and wired up to this module.
                                depMap = makeModuleMap(depMap,
                                                       (this.map.isDefine ? this.map : this.map.parentMap),
                                                       false,
                                                       !this.skipMap);
                                this.depMaps[i] = depMap;

                                handler = getOwn(handlers, depMap.id);

                                if (handler) {
                                    this.depExports[i] = handler(this);
                                    return;
                                }

                                this.depCount += 1;

                                on(depMap, 'defined', bind(this, function (depExports) {
                                    this.defineDep(i, depExports);
                                    this.check();
                                }));

                                if (this.errback) {
                                    on(depMap, 'error', bind(this, this.errback));
                                }
                            }

                            id = depMap.id;
                            mod = registry[id];

                            //Skip special modules like 'require', 'exports', 'module'
                            //Also, don't call enable if it is already enabled,
                            //important in circular dependency cases.
                            if (!hasProp(handlers, id) && mod && !mod.enabled) {
                                context.enable(depMap, this);
                            }
                        }));

                        //Enable each plugin that is used in
                        //a dependency
                        eachProp(this.pluginMaps, bind(this, function (pluginMap) {
                            var mod = getOwn(registry, pluginMap.id);
                            if (mod && !mod.enabled) {
                                context.enable(pluginMap, this);
                            }
                        }));

                        this.enabling = false;

                        this.check();
                    },

                    on: function (name, cb) {
                        var cbs = this.events[name];
                        if (!cbs) {
                            cbs = this.events[name] = [];
                        }
                        cbs.push(cb);
                    },

                    emit: function (name, evt) {
                        each(this.events[name], function (cb) {
                            cb(evt);
                        });
                        if (name === 'error') {
                            //Now that the error handler was triggered, remove
                            //the listeners, since this broken Module instance
                            //can stay around for a while in the registry.
                            delete this.events[name];
                        }
                    }
                };

                function callGetModule(args) {
                    //Skip modules already defined.
                    if (!hasProp(defined, args[0])) {
                        getModule(makeModuleMap(args[0], null, true)).init(args[1], args[2]);
                    }
                }

                function removeListener(node, func, name, ieName) {
                    //Favor detachEvent because of IE9
                    //issue, see attachEvent/addEventListener comment elsewhere
                    //in this file.
                    if (node.detachEvent && !isOpera) {
                        //Probably IE. If not it will throw an error, which will be
                        //useful to know.
                        if (ieName) {
                            node.detachEvent(ieName, func);
                        }
                    } else {
                        node.removeEventListener(name, func, false);
                    }
                }

                /**
                 * Given an event from a script node, get the requirejs info from it,
                 * and then removes the event listeners on the node.
                 * @param {Event} evt
                 * @returns {Object}
                 */
                function getScriptData(evt) {
                    //Using currentTarget instead of target for Firefox 2.0's sake. Not
                    //all old browsers will be supported, but this one was easy enough
                    //to support and still makes sense.
                    var node = evt.currentTarget || evt.srcElement;

                    //Remove the listeners once here.
                    removeListener(node, context.onScriptLoad, 'load', 'onreadystatechange');
                    removeListener(node, context.onScriptError, 'error');

                    return {
                        node: node,
                        id: node && node.getAttribute('data-requiremodule')
                    };
                }

                function intakeDefines() {
                    var args;

                    //Any defined modules in the global queue, intake them now.
                    takeGlobalQueue();

                    //Make sure any remaining defQueue items get properly processed.
                    while (defQueue.length) {
                        args = defQueue.shift();
                        if (args[0] === null) {
                            return onError(makeError('mismatch', 'Mismatched anonymous define() module: ' + args[args.length - 1]));
                        } else {
                            //args are id, deps, factory. Should be normalized by the
                            //define() function.
                            callGetModule(args);
                        }
                    }
                }

                context = {
                    config: config,
                    contextName: contextName,
                    registry: registry,
                    defined: defined,
                    urlFetched: urlFetched,
                    defQueue: defQueue,
                    Module: Module,
                    makeModuleMap: makeModuleMap,
                    nextTick: req.nextTick,
                    onError: onError,

                    /**
                     * Set a configuration for the context.
                     * @param {Object} cfg config object to integrate.
                     */
                    configure: function (cfg) {
                        //Make sure the baseUrl ends in a slash.
                        if (cfg.baseUrl) {
                            if (cfg.baseUrl.charAt(cfg.baseUrl.length - 1) !== '/') {
                                cfg.baseUrl += '/';
                            }
                        }

                        //Save off the paths since they require special processing,
                        //they are additive.
                        var shim = config.shim,
                            objs = {
                                paths: true,
                                bundles: true,
                                config: true,
                                map: true
                            };

                        eachProp(cfg, function (value, prop) {
                            if (objs[prop]) {
                                if (!config[prop]) {
                                    config[prop] = {};
                                }
                                mixin(config[prop], value, true, true);
                            } else {
                                config[prop] = value;
                            }
                        });

                        //Reverse map the bundles
                        if (cfg.bundles) {
                            eachProp(cfg.bundles, function (value, prop) {
                                each(value, function (v) {
                                    if (v !== prop) {
                                        bundlesMap[v] = prop;
                                    }
                                });
                            });
                        }

                        //Merge shim
                        if (cfg.shim) {
                            eachProp(cfg.shim, function (value, id) {
                                //Normalize the structure
                                if (isArray(value)) {
                                    value = {
                                        deps: value
                                    };
                                }
                                if ((value.exports || value.init) && !value.exportsFn) {
                                    value.exportsFn = context.makeShimExports(value);
                                }
                                shim[id] = value;
                            });
                            config.shim = shim;
                        }

                        //Adjust packages if necessary.
                        if (cfg.packages) {
                            each(cfg.packages, function (pkgObj) {
                                var location, name;

                                pkgObj = typeof pkgObj === 'string' ? { name: pkgObj } : pkgObj;

                                name = pkgObj.name;
                                location = pkgObj.location;
                                if (location) {
                                    config.paths[name] = pkgObj.location;
                                }

                                //Save pointer to main module ID for pkg name.
                                //Remove leading dot in main, so main paths are normalized,
                                //and remove any trailing .js, since different package
                                //envs have different conventions: some use a module name,
                                //some use a file name.
                                config.pkgs[name] = pkgObj.name + '/' + (pkgObj.main || 'main')
                                             .replace(currDirRegExp, '')
                                             .replace(jsSuffixRegExp, '');
                            });
                        }

                        //If there are any "waiting to execute" modules in the registry,
                        //update the maps for them, since their info, like URLs to load,
                        //may have changed.
                        eachProp(registry, function (mod, id) {
                            //If module already has init called, since it is too
                            //late to modify them, and ignore unnormalized ones
                            //since they are transient.
                            if (!mod.inited && !mod.map.unnormalized) {
                                mod.map = makeModuleMap(id);
                            }
                        });

                        //If a deps array or a config callback is specified, then call
                        //require with those args. This is useful when require is defined as a
                        //config object before require.js is loaded.
                        if (cfg.deps || cfg.callback) {
                            context.require(cfg.deps || [], cfg.callback);
                        }
                    },

                    makeShimExports: function (value) {
                        function fn() {
                            var ret;
                            if (value.init) {
                                ret = value.init.apply(global, arguments);
                            }
                            return ret || (value.exports && getGlobal(value.exports));
                        }
                        return fn;
                    },

                    makeRequire: function (relMap, options) {
                        options = options || {};

                        function localRequire(deps, callback, errback) {
                            var id, map, requireMod;

                            if (options.enableBuildCallback && callback && isFunction(callback)) {
                                callback.__requireJsBuild = true;
                            }

                            if (typeof deps === 'string') {
                                if (isFunction(callback)) {
                                    //Invalid call
                                    return onError(makeError('requireargs', 'Invalid require call'), errback);
                                }

                                //If require|exports|module are requested, get the
                                //value for them from the special handlers. Caveat:
                                //this only works while module is being defined.
                                if (relMap && hasProp(handlers, deps)) {
                                    return handlers[deps](registry[relMap.id]);
                                }

                                //Synchronous access to one module. If require.get is
                                //available (as in the Node adapter), prefer that.
                                if (req.get) {
                                    return req.get(context, deps, relMap, localRequire);
                                }

                                //Normalize module name, if it contains . or ..
                                map = makeModuleMap(deps, relMap, false, true);
                                id = map.id;

                                if (!hasProp(defined, id)) {
                                    return onError(makeError('notloaded', 'Module name "' +
                                                id +
                                                '" has not been loaded yet for context: ' +
                                                contextName +
                                                (relMap ? '' : '. Use require([])')));
                                }
                                return defined[id];
                            }

                            //Grab defines waiting in the global queue.
                            intakeDefines();

                            //Mark all the dependencies as needing to be loaded.
                            context.nextTick(function () {
                                //Some defines could have been added since the
                                //require call, collect them.
                                intakeDefines();

                                requireMod = getModule(makeModuleMap(null, relMap));

                                //Store if map config should be applied to this require
                                //call for dependencies.
                                requireMod.skipMap = options.skipMap;

                                requireMod.init(deps, callback, errback, {
                                    enabled: true
                                });

                                checkLoaded();
                            });

                            return localRequire;
                        }

                        mixin(localRequire, {
                            isBrowser: isBrowser,

                            /**
                             * Converts a module name + .extension into an URL path.
                             * *Requires* the use of a module name. It does not support using
                             * plain URLs like nameToUrl.
                             */
                            toUrl: function (moduleNamePlusExt) {
                                var ext,
                                    index = moduleNamePlusExt.lastIndexOf('.'),
                                    segment = moduleNamePlusExt.split('/')[0],
                                    isRelative = segment === '.' || segment === '..';

                                //Have a file extension alias, and it is not the
                                //dots from a relative path.
                                if (index !== -1 && (!isRelative || index > 1)) {
                                    ext = moduleNamePlusExt.substring(index, moduleNamePlusExt.length);
                                    moduleNamePlusExt = moduleNamePlusExt.substring(0, index);
                                }

                                return context.nameToUrl(normalize(moduleNamePlusExt,
                                                        relMap && relMap.id, true), ext,  true);
                            },

                            defined: function (id) {
                                return hasProp(defined, makeModuleMap(id, relMap, false, true).id);
                            },

                            specified: function (id) {
                                id = makeModuleMap(id, relMap, false, true).id;
                                return hasProp(defined, id) || hasProp(registry, id);
                            }
                        });

                        //Only allow undef on top level require calls
                        if (!relMap) {
                            localRequire.undef = function (id) {
                                //Bind any waiting define() calls to this context,
                                //fix for #408
                                takeGlobalQueue();

                                var map = makeModuleMap(id, relMap, true),
                                    mod = getOwn(registry, id);

                                removeScript(id);

                                delete defined[id];
                                delete urlFetched[map.url];
                                delete undefEvents[id];

                                //Clean queued defines too. Go backwards
                                //in array so that the splices do not
                                //mess up the iteration.
                                eachReverse(defQueue, function(args, i) {
                                    if(args[0] === id) {
                                        defQueue.splice(i, 1);
                                    }
                                });

                                if (mod) {
                                    //Hold on to listeners in case the
                                    //module will be attempted to be reloaded
                                    //using a different config.
                                    if (mod.events.defined) {
                                        undefEvents[id] = mod.events;
                                    }

                                    cleanRegistry(id);
                                }
                            };
                        }

                        return localRequire;
                    },

                    /**
                     * Called to enable a module if it is still in the registry
                     * awaiting enablement. A second arg, parent, the parent module,
                     * is passed in for context, when this method is overridden by
                     * the optimizer. Not shown here to keep code compact.
                     */
                    enable: function (depMap) {
                        var mod = getOwn(registry, depMap.id);
                        if (mod) {
                            getModule(depMap).enable();
                        }
                    },

                    /**
                     * Internal method used by environment adapters to complete a load event.
                     * A load event could be a script load or just a load pass from a synchronous
                     * load call.
                     * @param {String} moduleName the name of the module to potentially complete.
                     */
                    completeLoad: function (moduleName) {
                        var found, args, mod,
                            shim = getOwn(config.shim, moduleName) || {},
                            shExports = shim.exports;

                        takeGlobalQueue();

                        while (defQueue.length) {
                            args = defQueue.shift();
                            if (args[0] === null) {
                                args[0] = moduleName;
                                //If already found an anonymous module and bound it
                                //to this name, then this is some other anon module
                                //waiting for its completeLoad to fire.
                                if (found) {
                                    break;
                                }
                                found = true;
                            } else if (args[0] === moduleName) {
                                //Found matching define call for this script!
                                found = true;
                            }

                            callGetModule(args);
                        }

                        //Do this after the cycle of callGetModule in case the result
                        //of those calls/init calls changes the registry.
                        mod = getOwn(registry, moduleName);

                        if (!found && !hasProp(defined, moduleName) && mod && !mod.inited) {
                            if (config.enforceDefine && (!shExports || !getGlobal(shExports))) {
                                if (hasPathFallback(moduleName)) {
                                    return;
                                } else {
                                    return onError(makeError('nodefine',
                                                     'No define call for ' + moduleName,
                                                     null,
                                                     [moduleName]));
                                }
                            } else {
                                //A script that does not call define(), so just simulate
                                //the call for it.
                                callGetModule([moduleName, (shim.deps || []), shim.exportsFn]);
                            }
                        }

                        checkLoaded();
                    },

                    /**
                     * Converts a module name to a file path. Supports cases where
                     * moduleName may actually be just an URL.
                     * Note that it **does not** call normalize on the moduleName,
                     * it is assumed to have already been normalized. This is an
                     * internal API, not a public one. Use toUrl for the public API.
                     */
                    nameToUrl: function (moduleName, ext, skipExt) {
                        var paths, syms, i, parentModule, url,
                            parentPath, bundleId,
                            pkgMain = getOwn(config.pkgs, moduleName);

                        if (pkgMain) {
                            moduleName = pkgMain;
                        }

                        bundleId = getOwn(bundlesMap, moduleName);

                        if (bundleId) {
                            return context.nameToUrl(bundleId, ext, skipExt);
                        }

                        //If a colon is in the URL, it indicates a protocol is used and it is just
                        //an URL to a file, or if it starts with a slash, contains a query arg (i.e. ?)
                        //or ends with .js, then assume the user meant to use an url and not a module id.
                        //The slash is important for protocol-less URLs as well as full paths.
                        if (req.jsExtRegExp.test(moduleName)) {
                            //Just a plain path, not module name lookup, so just return it.
                            //Add extension if it is included. This is a bit wonky, only non-.js things pass
                            //an extension, this method probably needs to be reworked.
                            url = moduleName + (ext || '');
                        } else {
                            //A module that needs to be converted to a path.
                            paths = config.paths;

                            syms = moduleName.split('/');
                            //For each module name segment, see if there is a path
                            //registered for it. Start with most specific name
                            //and work up from it.
                            for (i = syms.length; i > 0; i -= 1) {
                                parentModule = syms.slice(0, i).join('/');

                                parentPath = getOwn(paths, parentModule);
                                if (parentPath) {
                                    //If an array, it means there are a few choices,
                                    //Choose the one that is desired
                                    if (isArray(parentPath)) {
                                        parentPath = parentPath[0];
                                    }
                                    syms.splice(0, i, parentPath);
                                    break;
                                }
                            }

                            //Join the path parts together, then figure out if baseUrl is needed.
                            url = syms.join('/');
                            url += (ext || (/^data\:|\?/.test(url) || skipExt ? '' : '.js'));
                            url = (url.charAt(0) === '/' || url.match(/^[\w\+\.\-]+:/) ? '' : config.baseUrl) + url;
                        }

                        return config.urlArgs ? url +
                                                ((url.indexOf('?') === -1 ? '?' : '&') +
                                                 config.urlArgs) : url;
                    },

                    //Delegates to req.load. Broken out as a separate function to
                    //allow overriding in the optimizer.
                    load: function (id, url) {
                        req.load(context, id, url);
                    },

                    /**
                     * Executes a module callback function. Broken out as a separate function
                     * solely to allow the build system to sequence the files in the built
                     * layer in the right sequence.
                     *
                     * @private
                     */
                    execCb: function (name, callback, args, exports) {
                        return callback.apply(exports, args);
                    },

                    /**
                     * callback for script loads, used to check status of loading.
                     *
                     * @param {Event} evt the event from the browser for the script
                     * that was loaded.
                     */
                    onScriptLoad: function (evt) {
                        //Using currentTarget instead of target for Firefox 2.0's sake. Not
                        //all old browsers will be supported, but this one was easy enough
                        //to support and still makes sense.
                        if (evt.type === 'load' ||
                                (readyRegExp.test((evt.currentTarget || evt.srcElement).readyState))) {
                            //Reset interactive script so a script node is not held onto for
                            //to long.
                            interactiveScript = null;

                            //Pull out the name of the module and the context.
                            var data = getScriptData(evt);
                            context.completeLoad(data.id);
                        }
                    },

                    /**
                     * Callback for script errors.
                     */
                    onScriptError: function (evt) {
                        var data = getScriptData(evt);
                        if (!hasPathFallback(data.id)) {
                            return onError(makeError('scripterror', 'Script error for: ' + data.id, evt, [data.id]));
                        }
                    }
                };

                context.require = context.makeRequire();
                return context;
            }

            /**
             * Main entry point.
             *
             * If the only argument to require is a string, then the module that
             * is represented by that string is fetched for the appropriate context.
             *
             * If the first argument is an array, then it will be treated as an array
             * of dependency string names to fetch. An optional function callback can
             * be specified to execute when all of those dependencies are available.
             *
             * Make a local req variable to help Caja compliance (it assumes things
             * on a require that are not standardized), and to give a short
             * name for minification/local scope use.
             */
            req = requirejs = require = function (deps, callback, errback, optional) {

                //Find the right context, use default
                var context, config,
                    contextName = defContextName;

                // Determine if have config object in the call.
                if (!isArray(deps) && typeof deps !== 'string') {
                    // deps is a config object
                    config = deps;
                    if (isArray(callback)) {
                        // Adjust args if there are dependencies
                        deps = callback;
                        callback = errback;
                        errback = optional;
                    } else {
                        deps = [];
                    }
                }

                if (config && config.context) {
                    contextName = config.context;
                }

                context = getOwn(contexts, contextName);
                if (!context) {
                    context = contexts[contextName] = req.s.newContext(contextName);
                }

                if (config) {
                    context.configure(config);
                }

                return context.require(deps, callback, errback);
            };

            /**
             * Support require.config() to make it easier to cooperate with other
             * AMD loaders on globally agreed names.
             */
            req.config = function (config) {
                return req(config);
            };

            /**
             * Execute something after the current tick
             * of the event loop. Override for other envs
             * that have a better solution than setTimeout.
             * @param  {Function} fn function to execute later.
             */
            req.nextTick = typeof setTimeout !== 'undefined' ? function (fn) {
                setTimeout(fn, 4);
            } : function (fn) { fn(); };

            /**
             * Export require as a global, but only if it does not already exist.
             */
            if (!require) {
                require = req;
            }

            req.version = version;

            //Used to filter out dependencies that are already paths.
            req.jsExtRegExp = /^\/|:|\?|\.js$/;
            req.isBrowser = isBrowser;
            s = req.s = {
                contexts: contexts,
                newContext: newContext
            };

            //Create default context.
            req({});

            //Exports some context-sensitive methods on global require.
            each([
                'toUrl',
                'undef',
                'defined',
                'specified'
            ], function (prop) {
                //Reference from contexts instead of early binding to default context,
                //so that during builds, the latest instance of the default context
                //with its config gets used.
                req[prop] = function () {
                    var ctx = contexts[defContextName];
                    return ctx.require[prop].apply(ctx, arguments);
                };
            });

            if (isBrowser) {
                head = s.head = document.getElementsByTagName('head')[0];
                //If BASE tag is in play, using appendChild is a problem for IE6.
                //When that browser dies, this can be removed. Details in this jQuery bug:
                //http://dev.jquery.com/ticket/2709
                baseElement = document.getElementsByTagName('base')[0];
                if (baseElement) {
                    head = s.head = baseElement.parentNode;
                }
            }

            /**
             * Any errors that require explicitly generates will be passed to this
             * function. Intercept/override it if you want custom error handling.
             * @param {Error} err the error object.
             */
            req.onError = defaultOnError;

            /**
             * Creates the node for the load command. Only used in browser envs.
             */
            req.createNode = function (config, moduleName, url) {
                var node = config.xhtml ?
                        document.createElementNS('http://www.w3.org/1999/xhtml', 'html:script') :
                        document.createElement('script');
                node.type = config.scriptType || 'text/javascript';
                node.charset = 'utf-8';
                node.async = true;
                return node;
            };

            /**
             * Does the request to load a module for the browser case.
             * Make this a separate function to allow other environments
             * to override it.
             *
             * @param {Object} context the require context to find state.
             * @param {String} moduleName the name of the module.
             * @param {Object} url the URL to the module.
             */
            req.load = function (context, moduleName, url) {
                var config = (context && context.config) || {},
                    node;
                if (isBrowser) {
                    //In the browser so use a script tag
                    node = req.createNode(config, moduleName, url);

                    node.setAttribute('data-requirecontext', context.contextName);
                    node.setAttribute('data-requiremodule', moduleName);

                    //Set up load listener. Test attachEvent first because IE9 has
                    //a subtle issue in its addEventListener and script onload firings
                    //that do not match the behavior of all other browsers with
                    //addEventListener support, which fire the onload event for a
                    //script right after the script execution. See:
                    //https://connect.microsoft.com/IE/feedback/details/648057/script-onload-event-is-not-fired-immediately-after-script-execution
                    //UNFORTUNATELY Opera implements attachEvent but does not follow the script
                    //script execution mode.
                    if (node.attachEvent &&
                            //Check if node.attachEvent is artificially added by custom script or
                            //natively supported by browser
                            //read https://github.com/jrburke/requirejs/issues/187
                            //if we can NOT find [native code] then it must NOT natively supported.
                            //in IE8, node.attachEvent does not have toString()
                            //Note the test for "[native code" with no closing brace, see:
                            //https://github.com/jrburke/requirejs/issues/273
                            !(node.attachEvent.toString && node.attachEvent.toString().indexOf('[native code') < 0) &&
                            !isOpera) {
                        //Probably IE. IE (at least 6-8) do not fire
                        //script onload right after executing the script, so
                        //we cannot tie the anonymous define call to a name.
                        //However, IE reports the script as being in 'interactive'
                        //readyState at the time of the define call.
                        useInteractive = true;

                        node.attachEvent('onreadystatechange', context.onScriptLoad);
                        //It would be great to add an error handler here to catch
                        //404s in IE9+. However, onreadystatechange will fire before
                        //the error handler, so that does not help. If addEventListener
                        //is used, then IE will fire error before load, but we cannot
                        //use that pathway given the connect.microsoft.com issue
                        //mentioned above about not doing the 'script execute,
                        //then fire the script load event listener before execute
                        //next script' that other browsers do.
                        //Best hope: IE10 fixes the issues,
                        //and then destroys all installs of IE 6-9.
                        //node.attachEvent('onerror', context.onScriptError);
                    } else {
                        node.addEventListener('load', context.onScriptLoad, false);
                        node.addEventListener('error', context.onScriptError, false);
                    }
                    node.src = url;

                    //For some cache cases in IE 6-8, the script executes before the end
                    //of the appendChild execution, so to tie an anonymous define
                    //call to the module name (which is stored on the node), hold on
                    //to a reference to this node, but clear after the DOM insertion.
                    currentlyAddingScript = node;
                    if (baseElement) {
                        head.insertBefore(node, baseElement);
                    } else {
                        head.appendChild(node);
                    }
                    currentlyAddingScript = null;

                    return node;
                } else if (isWebWorker) {
                    try {
                        //In a web worker, use importScripts. This is not a very
                        //efficient use of importScripts, importScripts will block until
                        //its script is downloaded and evaluated. However, if web workers
                        //are in play, the expectation that a build has been done so that
                        //only one script needs to be loaded anyway. This may need to be
                        //reevaluated if other use cases become common.
                        importScripts(url);

                        //Account for anonymous modules
                        context.completeLoad(moduleName);
                    } catch (e) {
                        console.error(moduleName, e);
                    }
                }
            };

            function getInteractiveScript() {
                if (interactiveScript && interactiveScript.readyState === 'interactive') {
                    return interactiveScript;
                }

                eachReverse(scripts(), function (script) {
                    if (script.readyState === 'interactive') {
                        return (interactiveScript = script);
                    }
                });
                return interactiveScript;
            }

            //Look for a data-main script attribute, which could also adjust the baseUrl.
            if (isBrowser && !cfg.skipDataMain) {
                //Figure out baseUrl. Get it from the script tag with require.js in it.
                eachReverse(scripts(), function (script) {
                    //Set the 'head' where we can append children by
                    //using the script's parent.
                    if (!head) {
                        head = script.parentNode;
                    }

                    //Look for a data-main attribute to set main script for the page
                    //to load. If it is there, the path to data main becomes the
                    //baseUrl, if it is not already set.
                    dataMain = script.getAttribute('data-main');
                    if (dataMain) {
                        //Preserve dataMain in case it is a path (i.e. contains '?')
                        mainScript = dataMain;

                        //Set final baseUrl if there is not already an explicit one.
                        if (!cfg.baseUrl) {
                            //Pull off the directory of data-main for use as the
                            //baseUrl.
                            src = mainScript.split('/');
                            mainScript = src.pop();
                            subPath = src.length ? src.join('/')  + '/' : './';

                            cfg.baseUrl = subPath;
                        }

                        //Strip off any trailing .js since mainScript is now
                        //like a module name.
                        mainScript = mainScript.replace(jsSuffixRegExp, '');

                         //If mainScript is still a path, fall back to dataMain
                        if (req.jsExtRegExp.test(mainScript)) {
                            mainScript = dataMain;
                        }

                        //Put the data-main script in the files to load.
                        cfg.deps = cfg.deps ? cfg.deps.concat(mainScript) : [mainScript];

                        return true;
                    }
                });
            }

            /**
             * The function that handles definitions of modules. Differs from
             * require() in that a string for the module should be the first argument,
             * and the function to execute after dependencies are loaded should
             * return a value to define the module corresponding to the first argument's
             * name.
             */
            define = function (name, deps, callback) {
                var node, context;

                //Allow for anonymous modules
                if (typeof name !== 'string') {
                    //Adjust args appropriately
                    callback = deps;
                    deps = name;
                    name = null;
                }

                //This module may not have dependencies
                if (!isArray(deps)) {
                    callback = deps;
                    deps = null;
                }

                //If no name, and callback is a function, then figure out if it a
                //CommonJS thing with dependencies.
                if (!deps && isFunction(callback)) {
                    deps = [];
                    //Remove comments from the callback string,
                    //look for require calls, and pull them into the dependencies,
                    //but only if there are function args.
                    if (callback.length) {
                        callback
                            .toString()
                            .replace(commentRegExp, '')
                            .replace(cjsRequireRegExp, function (match, dep) {
                                deps.push(dep);
                            });

                        //May be a CommonJS thing even without require calls, but still
                        //could use exports, and module. Avoid doing exports and module
                        //work though if it just needs require.
                        //REQUIRES the function to expect the CommonJS variables in the
                        //order listed below.
                        deps = (callback.length === 1 ? ['require'] : ['require', 'exports', 'module']).concat(deps);
                    }
                }

                //If in IE 6-8 and hit an anonymous define() call, do the interactive
                //work.
                if (useInteractive) {
                    node = currentlyAddingScript || getInteractiveScript();
                    if (node) {
                        if (!name) {
                            name = node.getAttribute('data-requiremodule');
                        }
                        context = contexts[node.getAttribute('data-requirecontext')];
                    }
                }

                //Always save off evaluating the def call until the script onload handler.
                //This allows multiple modules to be in a file without prematurely
                //tracing dependencies, and allows for anonymous module support,
                //where the module name is not known until the script onload event
                //occurs. If no context, use the global queue, and get it processed
                //in the onscript load callback.
                (context ? context.defQueue : globalDefQueue).push([name, deps, callback]);
            };

            define.amd = {
                jQuery: true
            };


            /**
             * Executes the text. Normally just uses eval, but can be modified
             * to use a better, environment-specific call. Only used for transpiling
             * loader plugins, not for plain JS modules.
             * @param {String} text the text to execute/evaluate.
             */
            req.exec = function (text) {
                /*jslint evil: true */
                return eval(text);
            };

            //Set up with config info.
            req(cfg);
        }(this));

    }
)